To expand field of view (FOV) of telescope, the method of special scanning often is used, but, for some telescopes with special structure in optics and machine, the conventional scanning methods are unsuitable. This paper proposes a novel scanning method based on autoguiding system so as to expand the FOV of fiber array solar optical telescope (FASOT) in possession of the special structure in optics and machine. Meanwhile, corresponding experiments are conducted in the FASOT prototype, FASOT-1B, in order to demonstrate that, for both FASOT and FASOT-1B, the proposed scanning method is feasible. First of all, on the basis of the software and hardware characteristics of FASOT and FASOT-1B, the three key technologies related to the proposed scanning method are described: quickly locating and pointing the first scanning step, the closed-loop controlling of multistep scanning, and the disturbance suppression of every scanning step based on Kalman filter. Afterwards, experiments are conducted and corresponding results show that the proposed scanning method is robust for the random disturbances forced on every scanning step and able to meet the scanning requirement of both FASOT and FASOT-1B .

中文翻译：

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基于自导系统的新型太阳望远镜扫描新方法

为了扩大望远镜的视场（FOV），通常使用特殊扫描的方法，但是，对于某些在光学和机械方面具有特殊结构的望远镜，常规的扫描方法是不合适的。本文提出了一种基于自动导引系统的新型扫描方法，以扩大光纤阵列太阳光学望远镜（FASOT）的视场，使其具有光学和机械上的特殊结构。同时，在FASOT原型FASOT-1B中进行了相应的实验，以证明对于FASOT和FASOT-1B而言，所提出的扫描方法都是可行的。首先，根据FASOT和FASOT-1B的软硬件特性，描述了与所建议的扫描方法相关的三项关键技术：快速定位并指出第一扫描步骤；多步扫描的闭环控制，以及基于卡尔曼滤波器的每个扫描步骤的干扰抑制。之后，进行了实验，结果表明，该方法对每个扫描步骤所产生的随机干扰具有鲁棒性，能够同时满足FASOT和FASOT-1B的扫描要求。